My homepage has moved to LIP, ENS Lyon Nom Schabanel Prénom Nicolas Téléphone 01 57 27 92 41 Bureau 4008b Mail nicolas.schabanel@cnrs.fr - Nicolas.Schabanel@irif.fr Page web https://www.irif.fr/~nschaban Nicolas Schabanel Directeur de recherches CNRS CNRS - IRIF (ex-LIAFA) Université Paris Diderot Bâtiment Sophie Germain 8 Place Aurélie Nemours 4th floor 75013 Paris France Office: 4005 (4th floor) Phone: +33 1 57 27 94 00 Resident member of the Rhône-Alpes Complex Systems Institute (IXXI) École normale supérieure de Lyon Bâtiment Monnod) 46 allée d'Italie 69364 Lyon Cedex 07 France Office: GN1 Nord 234 (Main Building, 2nd floor) Phone: +33 4 26 23 38 14 [ Research | GT CoA | Students | Publications | Popularization | Teaching | Other ] Upcoming Event Workshop: Computing with molecular geometry, Villa Finaly, Florence, Italie, Nov. 20-23, 2017 (Co-organizer with Claire Lesieur and Damien Woods) Founded by IXXI, Tapdance and la mission pour l'interdisciplinarité du CNRS 6èmes journées du GT CoA (Complexités et Algorithmes), LIP, Lyon, Nov. 27-28, 2017 Past Event Research school on Molecular Programming: Theory & Wet Lab Nano-Scale Computation at ENS Lyon, Jan 16-20, 2017 Free to register and open to everyone My current researches include Algorithms: approximation, randomized, online, distributed,… Complex systems: such as Algorithmic self-assembly, Molecular folding Complex networks: clustering and drawing of dynamical networks Stochastic cellular automata: definition, analysis, intrinsic simulations, local probabilistic correlations,… Small world phenomenon: analysis, algorithms design, modelization,… Random systems My work is currently supported by the ANR-2010-BLAN-0204 MAGNUM, ANR-12-BS02-005 RDAM and IXXI-MOLECAL grants. Students Nicolas Blanchard (M2, 2015; PhD advisor 2016-) Alberto Vera Azócar (U. Chile, several research internships 2013, 2015) Damien Regnault (PhD co-advisor with Éric Thierry, 2005-2008) Julien Robert (PhD advisor, 2006-2009) Emmanuelle Lebhar (PhD co-advisor with Michel Morvan, 2003-2005) Sandeep Dey (Master thesis advisor, 2005) Publications 2017 Proving the Turing Universality of Oritatami Co-Transcriptional Folding Cody Geary, Pierre-Étienne Meunier, Nicolas Schabanel, Shinnosuke Seki. Submitted, 65 pages, july 2017. [ Supplementary materials ] Dynamic Facility Location: Minimizing the Sum of Radii Nicolas K. Blanchard, Nicolas Schabanel. WALCOM, LNCS 10167:30-41, march 2017. 2016 Oritatami systems: a computational model for co-transcriptional folding Nicolas Schabanel. Invited plenary talk at Automata, Jun. 2016. Programming biomolecules that fold greedily during transcription Cody Geary, Pierre-Étienne Meunier, Nicolas Schabanel, Shinnosuke Seki. MFCS, LIPIcs 58, 43:1-43:14, Aug. 2016. Folding Turing is hard but feasible Cody Geary, Pierre-Étienne Meunier, Nicolas Schabanel, Shinnosuke Seki.HALG, Jun. 2016. 2015 Efficient universal computation by molecular co-transcriptional folding (Short announcement) Cody Geary, Pierre-Étienne Meunier, Nicolas Schabanel, Shinnosuke Seki. DNA21, 1 page, 2015. (Full version in submission, see above) 2014 Facility Location in Evolving Metrics with David Eisenstat and Claire Mathieu. ICALP, pages 459-470, 2014. 2013 Stochastic Cellular Automata: Correlations, Decidability and Simulations with Pablo Arrighi and Guillaume Theyssier. Fundamenta Informaticæ, 126:121-156, 2013. 2012 Intrinsic simulations between stochastic cellular automata with Pablo Arrighi and Guillaume Theyssier. AUTOMATA & JAC, EPTCS, 90:208–224, 2012. Randomness + Determinism = Progresses: Why random processes could be favored by evolution Progress in Biophysics and Moleculer Biology (Special edition on the conference ”Chance at the heart of the cell”), 110(1):129–136, 2012. 2011 Les complexités : point de vue d’un institut des systèmes complexes (in French) with Éric Bertin, Guillaume Beslon, Olivier Gandrillon, Sébastian Grauwin, and Pablo Jensen. Hermès, 60:145–150, 2011. Optimal path search in small worlds: Dimension matters with George Giakkoupis. STOC, 43:393–402, 2011. Analyzing search algorithms in smallworlds TERANET (colocated with DISC), 4 pages, Roma, Italy, Sep. 2011. 2010 Minimizing Maximum Flowtime of Jobs with Arbitrary Parallelizability with Kirk Pruhs and Julien Robert. WAOA, LNCS 6534:237–248, 2010. Systèmes complexes & algorithmes (in French) Habilitation à diriger des recherches, Université Paris Diderot, 2010. Slides On the analysis of “simple” 2D stochastic cellular automata with Damien Regnault and Éric Thierry. Invited publication to the special issue of DMTCS in honor of Philippe Flajolet, 12(2):263–294, 2009. 2009 Progresses in the analysis of stochastic 2D cellular automata: a study of asynchronous 2D Minority with Damien Regnault and Éric Thierry. TCS, 410(47-49):4844-4855S, 2009. doi:10.1016/j.tcs.2009.06.024 2008 Non-Clairvoyant Scheduling with Precedence Constraints with Julien Robert. SODA, 491-500, Jan. 2008. On the analysis of ”simple” 2D stochastic cellular automata with Damien Regnault and Éric Thierry. LATA, LNCS 5196:452-463, Mar. 2008. Time optimal self-assembling of 2D and 3D shapes: the case of squares and cubes with Florent Becker and Éric Rémila. DNA14, LNCS 5347:144–155, June 2008. Graph augmentation via metrics embedding with Emmanuelle Lebhar. OPODIS, LNCS 5401:217-225, Dec. 2008. 2007 Non-clairvoyant batch sets scheduling: Fairness is fair enough with Julien Robert. ESA, LNCS 4698:742-753, Oct. 2007. Progresses in the analysis of stochastic 2D cellular automata: a study of asynchronous 2D Minority with Damien Regnault and Éric Thierry. MFCS, LNCS 4708:320-332, Aug. 2007. Small alliances in graphs with Rodolfo Carvajal, Martín Matamala, and Iván Rapaport. MFCS, LNCS 4708:218-227, Aug. 2007. Pull-Based Data Broadcast with Dependencies: Be Fair to Users, not to Items with Julien Robert. SODA, p. 238-247, Jan. 2007. 2006 Customized Newspaper Problem: Data Broadcast with dependancies with Sandeep Dey. LATIN, LNCS 3887:362-373, Valdivia, march 2006. Asynchronous behavior of double-quiescent elementary cellular automata with Nazim Fatès, Damien Regnault and Éric Thierry. LATIN, LNCS 3887:455-466, Valdivia, march 2006. Could any graph be turn into a smallworld? with Philippe Duchon, Nicolas Hanusse and Emmanuelle Lebhar. TCS, 355(1):96-103, 2006. Towards small world emergence with Philippe Duchon, Nicolas Hanusse and Emmanuelle Lebhar.SPAA, 225-232, july 2006. Fully asynchronous behavior of double-quiescent elementary cellular automata with Nazim Fatès, Michel Morvan, Éric Thierry.TCS, 362(1-3):1-16, 2006. 2005 Close to optimal decentralized routing in long-range contact networks with Emmanuelle Lebhar. TCS, 348:294–310, 2005. Could any graph be turn into a smallworld? with Philippe Duchon, Nicolas Hanusse and, Emmanuelle Lebhar. DISC, LNCS 3724:512-513, Cracow, september 2005. Fully asynchronous behavior of double-quiescent elementary cellular automata with Nazim Fatès, Michel Morvan and Éric Thierry. MFCS, LNCS 3618:316-327, Gdansk, september 2005. 2004 Almost optimal decentralized routing in long-range contact networks with Emmanuelle Lebhar. ICALP, Turku, Finland, july 2004. Full An Internet Graph Model based on trade-off optimization with José-Ignacio Alvarez-Hamelin. European Physical Journal B (EPJB), 38(2):231-238, 2004. A preliminary version of the paper was presented at the Conference on Growing Networks and Graphs in Statistical Physics, Finance, Biology and Social Systems, Rome, 1-5 Sep. 2003. 2003 The data broadcast problem with non-uniform transmission times with Claire Kenyon. Algorithmica, 35:146-175, February 2003. A preliminary version of this paper was published in SODA 1999, pages 547-556. 2000 Algorithmes d'approximation pour les télécommunications sans fil : Ordonnancement pour la dissémination de données et Allocation statique de fréquences (in French) PDF PhD Thesis, École normale supérieure de Lyon, 2000. Advisors: Claire Kenyon and Stéphane Ubéda (local advisor). Polynomial-Time Approximation Scheme for Data Broadcast with Claire Kenyon and Neal E. Young. STOC, pages 659-666, May 2000. The databroadcast problem with preemption STACS, LNCS 1770:181-192, Lille, February 2000. Full 1999 The data broadcast problem with non-uniform transmission times with Claire Kenyon. SODA, pp.547–556. SIAM, Jan. 1999. A randomized BSP algorithm for the maximal independent set problem with Afonso Ferreira. In PPL, 9(3):411-422, 1999. A preliminary version was published in I-SPAN'99, pages 284-289, june 1999. 1998 and beyond Parallel algorithm for the optimization of the span of an hexagonal frequency planning graph with Stéphane Ubéda and Janez Žerovnik. Telepar, pages 237-241, Boston, Avril 1998. SCS. Concurrent rebalancing of AVL trees: a fine-grained approach with Luc Bougé, J. Gabarro, and X. Messeguer. Euro-Par, LNCS 1300:421-429, Août 1997. Full Basic linear algebra operations in SLI arithmetic with M. A. Anuta, D. W. Lozier, and Peter R. Turner. Euro-Par, LNCS 1124:193-202, Août 1996. Popularization 2016 Vérifier une preuve en n'en lisant que quelques lettres ! Nicolas Schabanel. Tangente, Hors série n°55:144-147 Les démonstrations, Jan. 2016 Le «petit» théorème PCP Nicolas Schabanel. Tangente, Hors série n°55:148-151 Les démonstrations, Jan. 2016 Réduire la taille d'une preuve Nicolas Schabanel. Tangente, Hors série n°55:152-155 Les démonstrations, Jan. 2016 2015 La médiation en informatique vue par le CNRS with Laure Guion. 1024 (Bulletin de la Société Informatique de France), Hors-série numéro 1 « Médiation scientifique : de la science informatique au grand public », p.19-21, février 2015. Les hottes du Père Noël 1024 (Bulletin de la Société Informatique de France), Hors-série numéro 1 « Médiation scientifique : de la science informatique au grand public », p.79-82, février 2015. 2013 Couper, attendrir, trancher, réduire : un conte culinaire sur la résolution informatique des problèmes difficiles. (in French) With Pierre Pansu. Mathématiques, l’explosion continue, pages 15-22, 2013. 2007 Routage dans les petits mondes PDF with Emmanuelle Lebhar. )i( interstices INRIA popularization website, 2007. 2003 Thèse idiote: le hasard fabrique des certitudes (in French) Le minotaure (trimenstrial journal, 20 000ex), 1:66-69, april-june 2003. Teaching Other Algoseum: “Bringing scientific interactive games and exhibitions to science museum”